Simple JavaScript for an embedded IFRAME to redirect the parent to a new page

I was working on a campaign page that has an embedded donate form in it. When I first set up the thank you page, it loaded within the form. This created essentially a page within a page, and it didn't look very professional.

However I found that by simply replacing that thank you page with this simple script, (and creating a separate static thank you page to point to) it would do what I wanted.

<script>
   parent.location.href="https://wildnet.org/welcome/thank-you"
</script>